Improvement in fire-alarm telegraphs



stunts-Tan. Fire-Alarm Telegraph.

2 S-he ets--Sheet1.

Patented Oct. 26, I875.

2 Sheets sheet 2. I

k s. EHEST B. I v

Fire-Alarm Telegraph. N0. 169,087. Patented 0ct.26,1875.

4 N-PETERS, FHOTO-LITHOGRAPHER, WASHINGTON. D C.

UNITED STATES PATENT O FIGE' STEPHEN CHESTER, OF ELIZABETH, NEW JERSEY.

IMPROVEMENT lN FIRE-ALARM T ELEGRAPHS.

Specification forming part of Letters Patent No. 169,087, dated October 26,1875; application filed May 5, 1675;

To all whom it may concern:

Be it known that I, STEPHEN CHESTER, of

Elizabeth, New Jersey, have invented an Improvement in Fire-Alarm Telegraph, of which the-following is a specification:

My invention consists of certa-iuimproved forms of apparatus for the transmission and reception of electro-telegraph signals and their combination with each other to produce speciiic results.

I will first describe these instruments sepa-. rately and their manner of operating in combination, first, however, indicating the results the combined machinery is intended to produce.

In all systems of electro-signaling, especially for the purpose of fire-alarm, the machinery of the receiving and transmitting office, among other functions, should be required to perform the following:

First, to sound all signals emanating from distant stations intelligibly, so that the attendant (if any) shall bear and recognize them.

Second, to record on paper or an equivalent the same signals in such manner that, if desired, the hour and minute may, if required, by additional machinery, be recorded on the same paper at the same time.

Third, that all signals emanating from distant stations received at the distributing-oflicc shall instantly be transmitted to other distant receiving-stations at the greatest rate of speed that the light and rapid moving receiving apparatus of certain stations is able to respond to, at a less rate of speed to stations where the receiving apparatus is less light and rapid in its action, and at other still slower speed to other stations where the receiving apparatus may of necessity be of a ponderous and slow moving character, the several transmissions occurring simultaneously, and not in rotation.

For instance, the receiving apparatus of one station may be a Morse sounder; of another, a gong; of a third, a huge tower-bell.

Fourth, when the machinery ofdistant trans mitting-stationsrequires such action to insure perfect operation, the machinery of distributing or receiving oi'lice should automatically send a momentary flash of augmented battery force over all the circuits on which are stations directly or indirectly communicating with each other, but in such manner that while the attractive force of'each magnet at such sendingstations is mon'ientarily increased the continuity of current shall not be thereby broken.

0n the drawing, Sheet 1, Figure l represents a combined repeater or transmittingma chine and register, of whiclr Figs. 10 and 11 present sectional elevations of the 'parts A and A those ends, respectively, being shown which meet in Fig. 6.

A is a frame supporting the gear-wheelsB O G, of \vhich'thewheel B, actuated by spring or weight, is the driving-wheel. The wheel Gr has a diameter half as great as that of G, and the wheel 0, in consequence. makes but half a revolution while the wheel G makes a whole revolution. Upon the shaft or axis of the wheel 0 are fixed the straight bar E and the double camwheel I). (See Figs. 1 and 3.)- When the swinging bar F is horizontal one or the other end of the bar 1) will strike. upon the roller g, Fig. 8, and arrest the motion of the machine; but if the movable'end of F ,be allowed to drop sufficiently E will escape, and

the machinery Will revolve until the bar F be v againrestored to its horizontal position.

I is a swinging bar, upon one end of which is fixed the armature of magnet H. Upon or near the lower end are two adjustable hooks, one being adjusted in a plane somewhat lower than the other, These are most distinctly shown in Fi 3, though the manner of their adjustment appears only in Fig. 1. These hooks are so placed upon the bar I in reference to the bar F that a triangular pin projecting perpendicularly from near the end of the latter, will, when the said bar is raised to a nearly horizontal position, be ready to rest upon either the upper or lower hook as the armature-bar I is moved to the one side or the other, and when thus resting the bar F will be supported in a nearly horizontal position, so that the roller (1 will be in position to arrest the motion of the machine, as described. Now, if the projecting pin be resting upon the higher hook, andthe magnet cause the bar I to move, the pin will slip off from the upper and drop onto the lower book. A reverse motion of the bar I will cause the pin to drop off from lower hook, and the bar F to fallzto such distance as may be convenient to perwoulda ply in this case.

lating 2 r r n I 169,037

,Inititn thus permittingthe wheels to revolite; ,butwin Fig. 3fit will beobserved that the bar F has a perpendicular arm, from the end of Ywhich a pin or roller projects in such mannerj thatit rests upon the two-part cam-wheel D. "lherefor'e, it the bar F be released and allowed to fall by thedouble action of magnet,

as above described, and the wheels begin to revolve, in little lessthan half a revolution of the wheel 0 tlietri'angular pin will, by the raising of the bar F, be replaced upon a the liigher hook, and when the half revolution of thewheel U (whole revolution of G) is com: plete, one or the other end of E striking the roller arrests the machine, which is now prepaned to repeat the same operation. Hence, ii'ithe circuitembracing the magnet H be openedand closed, or reversely closed and opened, this evolution willbe performed, and y for each entire and complete electric impulse c onimnnicated the wheel G will make one complete revolution and be arrested. The

breaking ota line or abnormal opening of a c rcuit w ll not sufficeto release the machin- I do not confine myself to this particular mode of releasing a detent by electricity, as any other method of controlling mechanical motors by magnets, so as to produce single or combined revolutions of shafts correspondingwith electric signals given from a distance, For the purpose of illustration only, I have herein described a method of controlling machinery heretofore invented by me, and more particularly described ingjpatent 88,010. Figs. 2 and 5 repres nt amethod of utilizing the motions given tothefwheel G by distant stations for the pnrpiosecausing like impulsesto be commnmcated to other and distinct circuits This instrument is lsup ilemen tal to, and inde pendent ot',the instrtunentjust described, ex-

cept in :sofar as that its primary shaft B is intended to, connect with the shaft of the wheel fGand to partake of its motion.

n n When from any cause two or more cylinders may be required, as illustrated in Fig. 2, (where two shafts,BPand B are shown,) motion is commumcated from one to the other by similar cog-wheels, giving absolutesimilarity 0t revolution andfthns arranged in reference tojthe machine previously described, it is obvious that each cylinder will revolve inexact corthe!starting-nIagnet H. 1 y 1 Upon the e ;cylirlers, which are of insuenial, may be placed conducting mauch posit-ion 1 and r such formthat,

re poinlencewiththe electric signals affecting when these cylinders revolve, various conduct- 1 i ns.mat z a slmay1h b us'hfl u on t wi h r oc ba t ri s, e e ram r "s al rd r l nstrumerits, so as to produce, warious desired changes in M nections,as hereinafter more particularly escribed.

In ithe, machine A, (Figs. L Mrepresenta train of wheels. terminating'in any balance fly-wheel or governor, N,motion being communicated throu gh the Cll'hfii l lg wheel J by weight or by sprin A secondary train, driven by the samedriving-wheelJ, communicates motion to the roller P through wheels Kand 0. The roller P is unconnected withgear-work, its otfice being simply that i of presser to cause the primary rollerl P to draw forward a. ribbon of paper, or its equivalent, with uniform speed when the machine P and P represent a second pape g roller and IJIESSOI. Roller P receives is in motion.

its motion directly l'romPK hymeans of gearwheels, which, for convenience, may be slipped upon the square ends of the shat'ts of B and P outside of the frame. Thus, by having pre pared sets of gearwvheels, of Varyingdiameters, but whose added diameter shall bethe same for each set, the relation of speetlbe-c tween the two sets of rollers can be variednat plea-sure by slipping diflerent sets of gearwheels upon the prepared ends of ithe two Let us suppose that xthe i.

mentioned shafts. gear-wheels Z, Fig. 6, have been ithusplaced,

and their relation? is such that the lfollers Pf andv P make three; revolutions while the rollers P and P make one. The: entire machine being wound up a-ndin readiness forj action, as shown in Fig. 1, and motion is arrested by the engagementofpin or projection on one end of the flywheel shaft Nwitlia pin or projection on the end otsli d ing rod or bar K. When the machine A, alrendy described, is placed in connection with the gma chine A ashat't, 9, connected with a crank-r motion attached toshat't of, wheel G in machine A, commnnicrrtes a reciprocating motion to wheel W in machine Resting upon the peripheries of wheels or cams .W and W (which are connected by shaft and partake of c i same motion) is a sliding bar, Y, Figs. 1 and 3, from which project the pins 0 c". To1the wheels W and W or either of them, are fixed bars I) b (not represented in Fig. 1,but shown in Fig. 3) in such fashion that, whenthewheels W and W are caused to move in the direction indicated by the arrows, the bars I) and r b come in contact with pins 0 cfland will forcethe bar Y from right to left for adistance limited by the amonntofreciprocating motion given to the barsb N, as before descrilied. r The sliding bar Y has upon its upper surface teethcorresponding to'thefi teethot' a wheel,

K, fixed on-the outer endot' shat'tof trrtin-wheel K. v It also has onitsunder-surface projections, which, for conyenience, Iwillwcnll blocks on Y. The wheels Wt and jw jha v ej a portionfo f their circumference cutawayto a depth corresponding to thethickness ot'blocks onhYJ It will beob served that, @when the barl Y is in its ,extrcme pojsition to ward righ t, and the primary machinery A is at rest, the blocks on Y rest upon the smaller diameter, of the lwheels VVPWZand the teeth on Y arein a plane too low to engage with those oflwheel a K. Now, if the whelsWElW? be caused]; to move in the direction indicatedfby, arrows,

' S is the anvil or matrix.

' ers P P make three revolutions.

ing the holes. block P are connected with an electric circuit the liars 0 and 0 will carry the bar Y to its extreme left position, the blocks on Y meanwhile resting upon the small diameter of wheels W W the bar Y being carried in a plane where its teeth will escape those of wheel K; but when, by the completion of the revolution of wheel G, the bars 0 0 and into a higher plane when its teeth engage in the teeth of wheel K. The wheel K meanwhile, being in motion, will slowly carry the 7 bar Y toward the right so long as the renewed impulse of the machine A causes the said bar to he carried to its extreme left position; but this lateral movement of Y toward the left causes its right-hand terminal hook to pull the leverj, and thus cause the sliding bar K to move to the right, withdrawing its left hand from the notch in wheel P and releasing the fly-wheel. Of course the sliding bar K cannot return to such position as to arrest the fly-wheel until the wheel P having made a complete revolution the notch again returns.

to where the bar K can slide into it. Shortly after the last impulse received from the machine A, the bar Y, slowly moving toward the right, drops out of gear, and rests until a new impulse again throws the machine into opera tion.

In Fig. 1, R is a punching-machine, of which T is a hammer, which is raised and allowed to fall upon the punch at each revolution of the wheel G, through means of a cam-wheel or equivalent device, upon the shaft of wheelGr. Thus every impulse communicated to machine A through the starting-magnet H causes the strip of paper to commence moving and holes to be punched in .the paper at intervals of space corresponding to the intervals of time between the impulses communicated to the magnet H; but the paper thus punched at intervals corresponding to the velocity given by rollers P passes thence over the block P and under the platina brush, or equivalent, Q, and through the rollers P P, which we have assumed make but one revolution while the roll- Hence the paper passes under the punch three times more rapidly than under the spring Q, or the interval of time required for the paper to pass under the spring Q from hole to hole in the paper is exactly three times as longas those which occnrredbetween blow and blow punch- Hence, it the spring Q and em hracin g electric bells or any electro-mech anical apparatus, the electric impulses comma-- nicated to all such apparatus will be in exact cut rates of speed by the saine initialzmachinery, and electric signals maybe communicated to one or several circuits orlines in such manner that the intervals separating the several impulses forming the signal shall in each case be mathematically proportionate; but the duration of such intervals shall in each case differ in exact proportion with the relative speed of the respective paper-rollers; but, as it is evident that-the slower-moving set of paper-rollers must make the same number of revolutions as do the firstset, then P and P must make three times as niany revolutions (as they initially carry the otherslas P 1 and, therefore, unless provision be made therefor, will continue to pay out an unnecessary and accumulating length of paper I after the punching apparatus had finished its otfice, which paper would become an incumbrance to the machine and render it ineffectwe. I

It has already been explained that, shortly after the last impulse of a signal has caused thestarting magnet H to operate, the bar Y will return to its normal position, leaving the-bar K free to return to the position" when it arrests the fly-wheel-so soon asthe slot in roller P (or, in the case of several sets of rollers, a slot in the last of the series) comes opposite the end of bar K, so that it may slip in. To prevent this occurring before the last punch-hole shall have passed under spring Q, a supplemental magnet, X, is placed in the same circuit as is P and Q, insuch manner that each impulse caused by a punch-hole passing between Q and P, permitting metallic connection, causes a movement ofthe armature-lever '1', pivoted at t. This lever engages with a pin upon the extension of sliding bar K, and draws it back in the same manner. as does the bar Y when it operates. As so far explained, it is evident that this device would only be occasionally effective unless provision be made that, after the wheel P shall reach that position, permitting bar K to arrest the machine, it shall not do so until the paper continues-to pass for a distance equal to the greatest distance between any two punches forming part of the same signal.

I do not confine myself to the use of an one of the numerous devices that are incommon use for producing similar results, audit is not, therefore, necessary to encumber these specifications with descriptions of devices which form no part of the present claims, and which are generally known.

,The bar Y Fig. 1, is to prevent the unnecessary accumulation of paper between the rollers P P and P P. It will be observed that the ends of shaft of roller P rest in a fork of Y which is jointed at a point between the axis of P and its own axis of motion, Y

This axis is a shaft running through the machine, and that portion of the device shown above theaxis Y existson bothzsides of the machine, but the lower prolongation exists only-on thatv side .of:the nachine whereisl the sliding'bar Y. Now, if this lower portion of r Y becarried a little to the right it will cause .theportion above its axis to assume a straight line, and its consequent elongation will raise xthe roller P slightly.

If the lower end he re- .(leased the weight of P will cause a deflection of the upper jointed portion of Y and the roller P will rest upon roller P, so that they :1 will perform their intended otfice of drawing paper. Now, a hook termination of Y, en-

- gages with the lower end of Y? in such man- 5 per thatwhen Y has reached its extreme p0- sitiou to right, but not until then, the necessary motion will be communicated to Y to acause roller 1? tobe raised.- In all other po- -sitions of Y the rollers P P will impinge and draw the paper. Hence, at the first impulse given to magnet H a hole will be punched,- and the paper will be drawn forward by rollers But when a time equal to the greatest interval that may separate parts of any signalhas passed, then, though the rollers con- Y tinue to revolve, the roller P will be raised and the paper cease to be drawn by the first it set of rollers. Atythis moment an amount of slack will have accumulated between the first and second sets of rollers, greater or less, as r the signal punched may have been longer or 1 shorter. But,qas heretofore described, provision has been made that the succeeding set of a rollers shall' continue to revolve until they 1. shall have made at least as many entire revolutions as had the preceding ones up to the time when r they ceased to affect the paper. a Hence, when the machine stops all the punches n will have passed through the last set of rollers, and there will be-no slack or accumulated paper between the successive sets of rollers.

It is of no importance in thus accomplishing these results whether this mechanical arran ment substantially described be used to makeholes in paper or other materials, which subsequently are utilized to close circuit by sufferin g metallic contacts to be made; or w hether the action be reversed, and the same mechanical force be applied to raising projections on materials, and in causing these records subseand alarm stations.

sente-d twelve separate loops or circuits, converging in one lntttery-station or central dequently to break circuit instead of closing ir. Sheet No. 2 illustrates the connection to be made between these several described instrument-s, telegraph-lines, batteries, and signal On this sheet are reprepot, designated by the ring A.

I do not confine myself to .an arrangement wherein sendingand receivingstatious must of necessity be placed upon different circuits.

r Itisonly necessary that separate apparatus,

eithertoratransmissionor reception, intended toqact simultaneously :at difl'erent rates of r speed; should be placed on separate circuits.

For illustration,xinz'this case I have represented :each class of instrument as being confined towns own circuit, and BB B B represent circuits containing automatic signal-star tions only; C (J G U,.containing quick-action electromechanical gong-strikers. On D D D D are placed great tower-bells only. The in strnmentf within the ring A represents the instrument heretofore described, and shown on Sheet No. 2, Figs. 6, 7, 8, &c., including the parts A A A h and k are similar instruments,including, however, the parts Aland A only, or the starting-machine and circuitchanging cylinders. a

In the machines It andfthearrangement of r the insulated and conducting surfaces brought in contact with the terminal springs resting thereon, when the cylinders rotate, in manner such that when the machine is at rest all the springs represented, except the two outside springs, reston insulated surface. The outside springs, however, rest on metallic rings,sothat the revolution of theshat't has no efl'ect upon their condition of metallic contact; but when this cylinder revolveseach pair of interior springs is in rotation brought in contact with separate metallic surfaces, which are, respect. ively, permanently connected with the, two

terminal rings.

a I Instrument K possesses a cylinder similarly arranged, and in addition asupplemental cylinder partaking of the same motion (as heretofore described, and shown in Fi 2, Sheet 1.) 1

The springs resting upon tllBbllllPltlllBlltiLl cylinder are connected with those resting upon the primary. and maybe regarded as the same: a this is with the exception of the exterior springs, which rest upon the primary only.

The metallic surfaces upon the supplemental cylinder are separate rings, of, width to embrace the terminals of each pair ot'sprmgs.

These rings are not entire, but are broken at one point. The width of this break, and its position on the shaft relative to the breaks of the other wheels, are such that-hoth cylin ders revolvingwhen anypair of springshas reached the metallic surfaces connecting them,

common metallic connections Hence if these two metallic connections be placed in anelec-I tric circuit it willt'ollowthat if all the magnetcircuits be closed then this local circuitnvill beopen. .But if any one of the magneucircuits opens, its armature-lever will fallback and close the local circuit. The battery10,

which, for convenience, may be called the alarm-battery, has its respective poles connected with exterior spr ngs ot' each of the erations must be in harmony.

three instruments h k f. As the connection of these exterior or battery springs with their respective instruments has already been de scribed, it will be observed that the normal condition of this battery is an open circuit, and is closed for an instaiit only, as one or another of the several cylinders may for that instant direct its entire force to the desired circuit. The process of directing the force of sin gle-battery series, or parts of series, through diii'erent circuits by means of revolving circuit-hreakers or pole-changers, has long been in use. The novelty in this case consists in the combination of several independent mechanical devices, each actuated by separate and independent electro or mechanical starting and controlling devices, yet each in such relation with the other that their several op- The several batteries b b b 1), arranged in one row near instrument K, may be called the several main batteries, and they are connected in the several signal-circuits B B B B. The normal condition of these circuits is closed. There are also represented three more separate batteries, marked b b b, and theseare, respectively, the batteries of local circuits h, k, and g, which embrace the several starting-magnets of the instruments d 6f.

The position of these several parts being understoogl, I will proceed to explain the connectionot' the apparatus with the several circuits, and, for convenience, I. will separately of each other similarcircuit is closed, and its relay-magnet holds its armature-lever, and local circuit 9 will be open. But it a signalbox in this (or any other similar circuit) be operated for each complete electro-impulse sent, it being thus transmitted through local circuit 9, machine f will cause one complete revolution of its circuit-closing cylinder. The two ends of gong-circuit C are directly connected with apair of springs resting on cylinder of machine f. Hence every revolution of said cylinder sends one ilash ot' alarm-battery 0 through the said circuit C and all similar circuits. Local circuit it connects starting-magnet of machine at with the platina brush and anvil of machine f. (Sheet 1, Fig. 1, P and Q.) Hence the passage of a punchloole between P and Q causes a single complete revolution of cylinder of machine d. Uircuit D terminates in pair of springs resting thereon, and therefore each revolution sends flash of alarm-battery 0 over all clreuits D.

Local circuit K is connected with a device helonging to machinef, not yet explained. Referring to Sheet 1. Fig. 3, it will be observed that when the sliding bar Y is at rest its insulated end rests upon a spring, Z, and breaks connection between the metallic-contacts ef. But it bar Y be moved to left the points 0 f will close.

It has also been explained that if bar Y be carried to left by legitimate operation of machine it will not return to its normal position, so as to open contact of e and f, until an interval of time longer than the interval occurring between any two signals in the same round of repeated signals.

Also, it has been explained that a complete electric impulse is required to operate these starting-machines-that is, a circuit must be opened aml again closed, or reversely closed and again opened, to cause the machine to operate. Therefore (again referringto Sheet 2) the local circuit K will cause machine 0 to operate only after a complete round of signals has been received. This will cause a single revolution of the cylinder of machine 0. its connection with B circuits and alarm-battery having been fully explained, it is obvious that theeflect will be to augment the force ot'each main battery by introducing for an instant therein the whole or any desired portion of the alarm-battery Withoutmeanwhile opening the circuit or diminishing the attractive force of any magnets placed in such circuits during this operation. Hence the armature-levers of distant magnets placed in circuits connected with this machine may be permittedto fall back, upon the opening of circuit, to-such distance that the magnet, influenced by its normal battery, has no eli'ective power over it; but the operation of this machine will so far increase the magneto force as to draw the armature-bar back to the position where the normal battery is fully competent to retain it. This is applicable not only to causing devices for what is termed '-non-interterence at remote stations to operate, but also to many other devices, for various purposes, to act at intervals other than those indicated by this, or any other station operating upon this, without the use of other wires, magnets, 8w. For ins ance, in any combinations whatever ot'sending or receiving stations this combination might be desired, station 36 may be required to repeat the number 36, and during its operation receivea different number, 15. It is evident that these operations could be performed without in the least interfering with the results to be accomplished by the initial station. Or, an initial machine may be required to perform any work at a distant station other than in the direct transmission of a numerical signal; and it may be desired that it should record in itself step by step the work it has actually accomplished, to be telegra- )hed back from the other end, and not simply what it ought to have done by so many revolutions or evolutions.

When this principle is applied to non-interferencedevices in systems of remote signal- StiltlUllS, by allowing the falling back of an nuinberotseparate and distinct circuits con verging at anyone point.

It remains, then, to add that,in order that this should be fully applicable to eflecting complete non-interference in the system of lines and circuitsl have described and represented on Sheet 2, I must cause the break which occurs on the primary signal-circuit to be repeated onall the other signal-circuits. It is obvious that this could readily be accomplished inthe arrangement of the relay-magnets, or in ythe primary circuit-closing machine, by adding another cylinder; but I have not deemed it expedient to add to the confusion of my drawings or to the length of these specifications of any one of the many devices that may be employed."

V It would be preferable that the first break only should be repeated to other signal-cir- .cuits,and that these circuits should then re main closed circuits unaffected by the succeedingbreaks occurring on the signal-sending circuit.

w This may be thus accomplished: The armature-bars of thetseveral relays may be held suspended each by its own magnet Where their contacts mutually close each others circuits. The breaking of any one of these circuitswill fcausc all circuits to break, and all the bars will fall to another contactbar when the contacts arearranged to close each circuit independently ot' the others. Hence they will not receive any impulses from the working circuit. When, after the close of a round ofsigna-ls, the

machine 0, Sheet 2, operates, the lower bar may be caused to be mechanically raised, so

as to restore all the armature-bars to their original positions without meanw hileunclosing circuitsa.

Asthis, however, is not to be made the subjectot' the present claims, but may be embodied in a future application, I have not more particularly described this, as it only seemed necessary toshow that non-interference on Tmany separate circuits could be attained in the system I have described. I

In the above-described system I do not claim any device to break each circuit from i the one first broken, and to mechanically close each circuit, thoughthe one first broken may remain open. (Patent 104:,357, of 1870.)

I do not claim the locking in or out of circuit the break-circuit wheel by any magnetic device. (Patent 113,643, of 1871.)

It is evident that, for the purposes of this i in vention, instead of several series of batteries,

ing electro-motive force applied to respective circuits; but I do claim- 1. The combination of a prime motor and.

train, an electro-magnet controlling the same, a revolving cylinder or cylinders causing on rotation a change or changes in the connections of one or more electric circuits, a perforator, and a train of wheels, giving uniform motion to the strip to be perforated, substantially as and for the purposes set forth.

2. The combination of aperibrator, two or more sets of. devices for removing thejperio.

rated strip therefrom, and movingxat ditterent rates of speed, and two or more electric circuits controlled by the operation thereof, whereby the signals upon one circuit are repeated over other electric circuits at different rates of speed for diiferent circuits, substantially as and for the purposesset fortln 3. The combination, with a prime-motor and train, and an electro-inagnet controlling the same,0f electric circuits, and two or more insulators or circuit-closers rotated by a prime motor, and throwing into circuit at one period during rotation an extra'amount of battery, whereby the electro-motive force in the circuits is increased, substantially: as and for the purposes set forth. i y

4. The combination, with any instruments carrying several sets of motors designedto, cause paper or other material whereon impressions have been made to repeat electric impulses over several circuits, at various rates of speed, of a device connected with any other part of a running, gear of such instrument, to successively render these several motors inoperative, by removing' the pressure the frictional roller or equivalent at specific pe riods in such manner that the paper or equivalent will cease to be moved thereby, sosoon as the impressed portion has beencarrieihpast a fixed point but that it shall continue to be carried by the succeedingmotors, substantially in the manner and for the purpose hereinbefore described. r

5. The combination of arack and pinion, with the supporting-wheels W W havingla portion of their peripherycut down to a smaller diameter, and provided with arms t'ormovinfgl the rack in one direction, a connecting lever and pitman connected to one wheeland traiiu, and imparting a rocking movement to tl e1 wheels, whereby, upon their movement inoitie direction, the rack is allowed to drop away from the pinion, but is held to engagemeiiit therewith on their movement in the other direction, substantially as and for the purposes set forth.

6. The combination, with the twoindependent motive trains, one of which is controlled by an electro-magnet, or a rack and pinion, connected with the trains, and controlling one thereof, whereby the motion of the first causes the release of the second, substantially as and for the purposes set forth.

7. The combination, with two independent motive trains. a rack and pinion connected therewith, and acting to release the second upon the movement of the first, of an extra magnet, and devices operating to allow the continuance of motion of the second train, after the motion of the first train has ceased, substantially as set forth.

8. The combination, with two or more batteries, or divisions or series of batteries, of the automatic circuit closer or breaker, to change the connections of the batteries, and thereby vary the electro-motive force of the circuits, or any of them, substantially as and for the purposes set forth.

STEPHEN CHESTER. Witnesses:

D. URMOND FRYE, A. 1). HUNTING. 

